Typographing stenciling material



(No Model.)

W. G. FUBRTH. TYPOGRAPHING $TENGILING MATERIAL.

No. 441,235. Patented Nov. 25, 1890.

flora/Z extrad M wwm o n @fiZQ (alumna-d NITED STATES PATENT 'FFICE.

\VILLIAM G. FUERTH, OF NEWVARK, NEW JERSEY, ASSIGNOR TO THE BEDDING INK AND DUPLICATOR COMPANY, OF NEW J ERSEY,

TYPOGRAPHING STENCILING MATERIAL.

SPECIFICATION forming part of Letters Patent No. 441,235, dated November 25, 1890 Application filed June 6, 1890- Serial No. 354,394. (No specimens.)

To all whom it may concern.- Be it known that I, WILLIAM G. FUERTH,

a citizen of the United States, residing at- Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Typographing Stenciling Material, to be used for the purposes of printing or reduplicating typewritten or other matter requiring fac-simile reproduction, of which the following is a full, clear, and exact description.

The figure represents the front and rear extractor-sheets and the interposed stencilsheet.

In order to enable others skilled in the art to make and use my invention, I will now describe its construction and indicate the manner in which I carry it out.

I first prepare a sheet of very porous tissuepaper, of bamboo or other suitable fabric having suficient strength of fiber with a coating of an albumen paraffinoid mixture to make it soft and pliable as well as impervious to the ink that is used in printing. I then ordinarily take a sheet of similar porous or fibrous material to be used over the paraffinoid or coated sheet for the reception of the impression or contact of the character to be reproduced on the prepared paper under neath. This uncoated sheet I call the pro tective sheet or extractor, every contact intended for the stencil-sheet underneath being direct upon the surface of the extractor, which takes up the preparation or coating from off the front side of the coated sheet beneath, laying bare the fiber port-ion within the space of such contacting character for stenciling purposes. I next take a sheet of soft paper, which I prepare to form a backing, which is designed to act, first, to resist the force of contact and to embed the contact ing character without rebounding; secondly, to remove the preparation of the coated paper on the reverse or rear side of the point of contact, so as to lay bare the fiber on both sides of the sheet, thus forming a stencil by extraction instead of cutting or perforating. It is evident that by this extracting process instead of the perforating process the more delicate characters-such as the looped letters 0, p, b, &c.-are not liable to be punched or pulled out, as the case may be, and the characters when reproduced do not appear broken or mutilated. The protecting slieet prevents the clogging of the contacting char actors with the preparation or coating of the stencil-sheet, thus obviating the necessity of stopping during the operation in order to pick out these secretions, which occasions a great loss of time.

With the extractor or protection sheet it is practically impossible to punch out or weaken the looped characters, and I produce the strongest and cleanest possible (paper) stencil for reduplicating purposes.

By the use of my soft prepared backing I secure a proper alignment of the characters,

' while the hard substances now used-such as oiled paper, &c.=do not roll the work covering the same through the carriage or platens without a certain amount of play or space be* tween the said backing and the platen, thus causing the bended or bulged material to playback and forth at each contact and cansing the material to be held out of the proper line of contact and causing an imperfect alignment, I

I amaware it is not broadly new to place a sheet of paper or like material behind the stencil sheet to serve as a backing for the same. I therefore do not broadly claim the same as my present invention. Sheets of stiff or oiled paper are open to serious objections, such as the inability of these stiff backings to closely hug the roller or bearing-surface to insure proper alignment of characters and uniform work. In my case I preferably use a sheet of soft ordinary writing or book paper and intend that the same shall be soft enough to have the characters embedded therein. I have also used bolting-cloth and similar fabrics in connection with the stencilsheet, but found the samev objectionable for my use, for the reason that certain of the letwithin the perforation, so that clear and distinct impressions were not always obtainable. To overcome the ob ections above noted, I

use my soft-paper backing and extract the coating from the face of the stencil-sheet instead of driving it through the same, while I also cause the characters to be embedded in 5 the s0ft-paper backing without rebounding.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In combination with a stencil-sheet, an extractor-sheet composed of soft paper in rear 10 thereof next to the bearing-surface to serve as a bearing'for the contacts and to have the characters embedded therein.

WILLIAM G. FUERTH.

Witnesses:

W. H. PATTERSON, CHAPMAN FOWLER. 

